SUMMARY Disabling compositor on startup removes all window buttons after reboot. STEPS TO REPRODUCE 1. Install Feren OS on KVM. 2. apt-get update && apt-get upgrade && apt-get dist-upgrade 3. Open compositor and untick Enable compositor on startup. Reboot OBSERVED RESULT Most if not all windowed apps display bars are gone. The menu, title bar, minimize maximize close buttons are all gone. EXPECTED RESULT The menu, title bar, minimize maximize close buttons appear. SOFTWARE/OS VERSIONS Windows: macOS: Linux/KDE Plasma: Feren OS (available in About System) KDE Plasma Version: 5.20.4 KDE Frameworks Version: 5.76.0 Qt Version: 5.15.1 Kernel 5.4.0-58-generic ADDITIONAL INFORMATION Only after enabling the compositor on next reboot do they reappear. Compositor is enabled and disabled after each reboot properly.
Created attachment 134077 [details] Kwin settings
Sounds like KWin isn't running, or has crashed. I expect there will be a crash log somewhere, perhaps accessible using `coredumpctl` Can you attach it?
Created attachment 134144 [details] coredumpctl,txt coredumpctl attached.
Hmm, I don't see any kwin crash logs. can you verify whether or not kwin_x11 is running at all?
kvm:~$ ps aux |grep kwin kvm 1330 0.0 1.7 480296 71000 ? Sl 07:15 0:01 /usr/bin/kwin_x11
Dear Bug Submitter, This bug has been in NEEDSINFO status with no change for at least 15 days. Please provide the requested information as soon as possible and set the bug status as REPORTED. Due to regular bug tracker maintenance, if the bug is still in NEEDSINFO status with no change in 30 days the bug will be closed as RESOLVED > WORKSFORME due to lack of needed information. For more information about our bug triaging procedures please read the wiki located here: https://community.kde.org/Guidelines_and_HOWTOs/Bug_triaging If you have already provided the requested information, please mark the bug as REPORTED so that the KDE team knows that the bug is ready to be confirmed. Thank you for helping us make KDE software even better for everyone!
This bug was reported against an outdated version of KWin. We have made many changes since the. If the issue persists in newer versions can you reopen the bug report updating the version number.